Improvement in road-wagons



0. W. SALAD'EE.

Road-Wagon. N 197,669.

Patented Nov. 27, I877.

N,PETERS. FHOTO-FITHOGR'AFH UNITED STATES A PATENT OFFICE.-

CYRUS W. SALADEE, OF WASHINGTON, DISTRICT OF COLUMBIA.

IMPROVEMENT lN ROAD-WAGONS.

Specification forming part of Letters Patent No. 197,669, dated November27, 1877; application filed September 21, 1877.

specification, embodying my said invention.

To enable others skilled in the art to make and use my invention, Iherewith submit the following general description.

My invention relates to that class of roadwagons in which the rear axleand bolster are connected by a rigid perch or perches, the object beingto obtain an elastic support for the body to prevent one portion of thespring-platform from yielding without the other parts, and to maintainthe parallelism of the rear axle and bolster.

In the drawing, Figure l is a perspective view, and Fig. 2 a sideelevation, of sufficient of a road-wagon to show my invention.

The front axle A is jointed to the bolster B, and the latter isconnected to 'the rear axle A by a rigid perch or perches in anysuitable manner, so that the rear axle and bolster are maintainedparallel to each other at the same distance apart, constituting a rigidframe for the support of the spring-platform.

The spring-platform consists of a central semi-elliptic spring, B, andside, or front and back, springs C C, the spring B extending below' thecentral perch or between the diverging perches C C, and being hung atthe front to. ears a, connected to'the bolster below the front axle, andat the rear to links b, suspended below the rear axle. I

The upper springs may be elliptic springs, arranged at the front andrear in any of the usual modes, as shown by dotted lines; but I preferto employ the semi-elliptic springs C, each pivoted to cars a on thebolster and to links b jointed to lugs on the rear axle, or both ends ofthe upper springs may be connected to the front bolster and rear axle bylinks in the usual way.

Whatever arrangement of upper springs is used, the body is braced byrigid stays E extending from each sideto the central spring B, which,while yielding to vertical pressure, will prevent the undue tilting ofthe body to one side when not loaded at the center.

This object is further secured by using the side springs C C andconnecting the braces E, forming a spring-platform in which all theparts are braced together and work in unison, securing a most elasticsupport for the body, and preventing the sagging or tilting to anymaterial extent when loaded at one side.

A most important auxiliary to this result is the rigid frame formed bythe rear-axle bolster and rigid perch, as the bolster and rear axle towhich the ends of the springs are connected cannot assume an angularposition to each other, as they are liable to do when connected solelyby the spring platform, straining the connections and tilting the bodymore or less. The rigid supporting-frame has the further advantage ofpreventing the falling of the body should a spring break.

A reduction in weighti sefiected and greater rigidity obtained byforming the braces E each of one piece of metal, the ends 00 of whichsupport and are bolted to the body, extend beyond the sides thereof, andform connections with the springs C, while the V-shaped center extendsto the central spring,forming the lateral stays.

I claim as my invention-- 1.. A road-wagon having the front and rearaxles connected by a rigid perch or perches, and provided with side orend springs, and with a lower central spring, B, connected to the bodyby braces, substantially as set forth.

2. The combination, with the rigid frame,

consisting of the rear-axle bolster and perch,

of a spring-platform, the lower spring ofwhich extends longitudinallybelow the center of the body and is connected thereto by braces,substantially as specified.

3. The combination, with the rigid supporting-frame of a road-wagon, ofa spring-platform, consisting of a lower central spring, B, and sidesprings C C connected to the body and central spring by braces E,substantially as set forth.

I11 testimony that I claim the above as my invention in road-wagons Ihereunto set my hand on this the 18th day of July, 1877.

CYRUS W. SALADEE.

Witnesses Gno. A. REYNOLDS, HENRY PIERPONT.

